Forming structure of armrest and chair-leg for bamboo chair

ABSTRACT

A forming structure of the armrest and the chair-leg for a bamboo chair comprising the armrest and the chair-leg with a general  -shape formed by bending the bamboo material, which the height of the armrest is higher than the height of the chair-leg. Two opposite outer surfaces of the chair-leg are adjoined with two opposite inner surfaces of the armrest to form a one-body armrest-leg unit. The bamboo chair is formed by combining a plurality of bamboo-seat units between two armrest-leg units to increase the load-bearing strength and enhance the one-body look-and-feel.

BACKGROUND OF THE INVENTION

a) Field of the Invention

The present invention relates to a bamboo chair made of the bamboomaterial, and more particularly, to the structure which combines thearmrest and chair-leg into one-body by using the bamboo material toincrease the load-bearing strength and enhance the one-bodylook-and-feel of the bamboo chair.

b) Description of the Prior Art

Normally, the material adopted for the chair includes many kinds, suchas wood, plastic, metal, and leather, etc. Besides the practicalfunction; the chair has the decoration effect owing to its delicatemanufacturing and graceful appearance. Moreover, the chair made ofbamboo or wood material is adored by the antique lover because of itsprimitive character.

In general, the structure of the chair includes a bottom portion; asupport portion; and a seat portion no matter what material of the chairis made. The bottom portion is used to touch the ground, and the seatportion is used to provide for the hip of the user to sit. The supportportion is connected between the bottom portion and the seat portion tosupport the seat portion. However, the weaving and knitting fabricationmethod is adopted for nearly all the conventional bamboo chair so as tomake the bamboo chair be lack of elasticity after being formed. It willeasily make the user feel uncomfortable after a long-time sitting.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a kind of structurefor the bamboo chair that ingeniously connects and combines the armrestwith the chair-leg into a one-body, so as to increase the whole strengthof the bamboo chair and make its look-and-feel more delicate.

One feature of the present invention is bending the bamboo material inadvance to form the armrest and the chair-leg with a general

-shape, and the height of the armrest is higher than the height of thechair-leg.

Furthermore, the side surface of the chair-leg is set with a pluralityof concave holes, and the seat is set with a plurality of lateral bamboostrips in the present invention. Two ends of the lateral bamboo stripare respectively matched into the concave holes of the chair-leg.

The lateral bamboo rods of the present invention are fixed to thechair-leg by using the fixing elements after inserting the lateralbamboo rods into the concave holes of the chair-leg, and so as to avoidthe separation between the seat and the chair-leg because of the bearingweight.

The chair-leg and the armrest made of bamboo material of the presentinvention have two legs and two armrest-legs respectively, and the twolegs tilt an angle toward the leaving direction for each other. The twoarmrest-legs also tilt an angle toward the leaving direction for eachother.

The technical measure of the present invention to construct the seat isutilizing a plurality of lateral bamboo strips to form a continuousbended shape, and laminating the first bamboo seat-component and thesecond bamboo seat-component in parallel pairs to construct a seat unit.A plurality of lateral bamboo rods are set between the first bambooseat-component and the second bamboo seat-component, and two ends of thelateral bamboo rods are respectively protruded out of two sides of theseat for a proper length. The first bamboo seat-component and the secondbamboo seat-component of the seat unit are separated out laminated spaceby using the lateral bamboo rods. Therefore, the bamboo seat with thebamboo chair-back is constructed by nailing each first bambooseat-component and each second bamboo seat-component with the lateralbamboo rods.

The present invention utilizes good elasticity feature of the bamboomaterial and crafted technical art to further combine the bamboo armrestwith the bamboo chair-leg into a one-body structure, so as to increasethe whole strength of the bamboo chair and make its look-and-feel moredelicate. Therefore, the present invention with excellent performanceand practical application is new and innovative. Consequently, thepresent invention satisfies all the requirements of the patent law.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front-view plane schematic diagram to illustrate a bamboochair after forming according to one embodiment of the presentinvention;

FIG. 2 is a top-view plane schematic diagram of FIG. 1;

FIG. 3 is a side-view plane schematic diagram of FIG. 1;

FIG. 4 is a cross-sectional plane schematic diagram along the A-Adirection of FIG. 1;

FIG. 5A and FIG. 5B are the side-view and front-view plane schematicdiagrams to respectively illustrate the structure of the chair-legformed in advance of the present invention; and

FIG. 6A to FIG. 6C are the side-view, front-view, and top-view planeschematic diagrams to respectively illustrate the structure of thearmrest formed in advance of the present invention; and

FIG. 7 is a cross-sectional plane schematic diagram along the A-Adirection of FIG. 1 to illustrate the structure of the seat unit formedin advance of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT

The detailed explanation of the present invention is described asfollowing. The described preferred embodiments are presented forpurposes of illustrations and description, and they are not intended tolimit the scope of the present invention.

The foregoing aspects and many of the accompanying objects, functions,and advantages of this invention will become more readily appreciated asthe same becomes better understood by reference to the followingdetailed description, when taken in conjunction with the accompanyingdrawings.

Firstly, please refer to FIG. 1 to FIG. 3, the bamboo chair according tothe preferred embodiment of the present invention is formed by aplurality of bamboo components. The bamboo chair comprises the chair-leg1 and the armrest 2 with a general

-shape formed by bending the bamboo material; and the seat 3 formed bycontinuous bending the bamboo material. The chair-leg 1 and the armrest2 are combined to form a one-body armrest-leg unit, and the seat 3 isfixed between two armrest-leg units.

Next, the chair-leg 1 of the present invention is formed by bending thebamboo material to have a general

-shape as shown in FIG. 5A and FIG. 5B. The chair-leg 1 has the legs 11faced each other on two opposite sides; and the leg-connection portion12 positioned thereon to connect two legs 11. The two legs 11 may tiltan angle toward the leaving direction for each other, so as to enlargethe support area between the lower ends of the legs 11 and the ground.And, the side surface of the chair-leg 1 may set with a plurality ofconcave holes 13.

Then, the structure of the armrest 2 for the present invention is alsoformed by bending the bamboo material to have a general

-shape as shown in FIG. 6A to FIG. 6C. The armrest 2 has thearmrest-legs 21 faced each other on two opposite sides; and thearmrest-leg-connection portion 22 positioned thereon to connect twoarmrest-legs 21. The two armrest-legs 21 may tilt an angle toward theleaving direction for each other, so as to enlarge the support areabetween the lower ends of the armrest-legs 21 and the ground. And, theoverall height of the armrest 2 is higher than which of the chair-leg 1.Preferably, the tilted angle of the armrest-legs 21 is the same as whichof the legs 11 of the chair-leg 1. And, the size of the opposite innersides of the armrest-legs 21 is preferably the same as which of theopposite outer sides of the legs 11 of the chair-leg 1.

Through the structure of the chair-leg 1 and the armrest 2 describedabove, the implemented way of the present invention for combining thechair-leg 1 with the armrest 2 into a one-body is to combine the twoopposite outer surfaces of the legs 11 and the two opposite innersurfaces of the armrest-legs 21 so as to form a one-body armrest-legunit.

Furthermore, as shown in FIG. 4 and FIG. 7, the above-mentionedarmrest-leg unit needs to cooperate with the seat 3 for practical usage.The seat 3 in the embodiment of the present invention is also made ofbamboo material, which comprises a plurality of lateral bamboo stripsformed in a continuous bended shape to construct the bamboo seat. Thefirst bamboo seat-component 31 A and the second bamboo seat-component31B are laminated in pairs to construct a seat unit 31. The seat units31 are paralleled lineup, and a plurality of lateral bamboo rods 4 areset between the first bamboo seat-component 31A and the second bambooseat-component 31B. And, two ends of the lateral bamboo rods 4 arerespectively protruded out of two sides of the seat 3 for a properlength. The first bamboo seat-component 31A and the second bambooseat-component 31B of the seat unit 31 are separated out laminated spaceby using the lateral bamboo rods 4. Then, the bamboo seat 3 with thebamboo chair-back is constructed by using the fixing elements 5 to naileach first bamboo seat-component 31A and each second bambooseat-component 31B with the lateral bamboo rods 4.

The assembly way of the seat 3 with two armrest-leg units is directinserting the lateral bamboo rods 4 positioned in two sides of the seat3 into the concave holes 13 of the chair-leg 1 and fixing them.Preferably, the tight fastening is applied between the two ends of thelateral bamboo rods 4 and the concave holes 13. Moreover, the lateralbamboo rods 4 may be further drilled holes in the proper positions neartheir free ends. And, the inner surfaces of the chair-leg 1 may bedrilled corresponding holes in the proper positions to make thecorresponding holes correspond to each other after the lateral bamboorods 4 entering into the concave holes 13. Then, the complete fixingbetween the lateral bamboo rods 4 and the chair-leg 1 is obtained byusing the fixing elements 5 to nail into the corresponding holes.Accordingly, the better load-bearing strength and the one-bodylook-and-feel are achieved by the present invention.

The foregoing descriptions of specific embodiments of the presentinvention have been presented for purposes of illustrations anddescription. They are not intended to be exclusive or to limit theinvention to the precise forms disclosed, and obviously manymodifications and variations are possible in light of the aboveteaching. The embodiments were chosen and described in order to bestexplain the principles of the invention and its practical application,to thereby enable others skilled in the art to best utilize theinvention and various embodiments with various modifications as aresuited to particular use contemplated. It is intended that the scope ofthe invention be defined by the Claims appended hereto and theirequivalents.

What is claimed is:
 1. A forming structure of an armrest and a chair-legfor a bamboo chair, comprising: the chair-leg with a general

-shape formed by bending bamboo material, wherein the chair-leg has twolegs; and the armrest with a general

-shape formed by bending bamboo material, wherein the armrest has twoarmrest-legs, and the height of the armrest is higher than the height ofthe chair-leg; wherein two opposite outer surfaces of the legs of thechair-leg are adjoined with two opposite inner surfaces of thearmrest-legs of the armrest to form a one-body armrest-leg unit.
 2. Theforming structure of an armrest and a chair-leg for a bamboo chairaccording to claim 1, wherein the bamboo chair is set with a seat, andthe corresponding side surfaces of the two legs is set with a pluralityof concave holes; wherein the seat is set with a plurality of lateralbamboo strips, and two ends of the lateral bamboo strip are respectivelymatched into the concave holes.
 3. The forming structure of an armrestand a chair-leg for a bamboo chair according to claim 2, furthercomprising a plurality of lateral bamboo rods and a plurality of fixingelements; wherein the lateral bamboo rods are fixed to the chair-leg bythe fixing elements after the lateral bamboo rods are inserted into theconcave holes.
 4. The forming structure of an armrest and a chair-legfor a bamboo chair according to claim 1, wherein the two legs of thechair-leg tilt an angle toward the leaving direction for each other, andthe two armrest-legs of the armrest tilt an angle toward the leavingdirection for each other.
 5. The forming structure of an armrest and achair-leg for a bamboo chair according to claim 2, wherein the seat isconstructed by a plurality of seat units, and two armrest-leg units arecombined by the seat intervened.